Tread portion of an automobile tire



FIG. 1 is a perspective view of a tread portion of an automobileaccording to the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a fragmentary enlarged view showing the details of the treadportion; and,

FIG. 7 is an end view taken along line 7-7 in FIG. 6.

Broken lines in the drawing figures show portions of the tire that arenot being claimed and thus form no part of the claimed design.

The ornamental design for a tread portion of an automobile tire, asshown and described.